If anyone's using mappy as their tile editor I've modified the flixel exporter plugin to export AXGL maps. The file is attached to this post; it's in a zip because the lua extension wasn't allowed. Just unzip the file and drop it in the luascr folder for mappy. You will also need to update the MAPWIN.INI file to include the plugin. Open the ini file in a text editor and find the lua scripts section. Just add one more line for the new plugin.

example:

lua16=Export AXGL map.lua

To use the exported map, embed the generated text file and pass a new instance to AxTilemap.build().